Refactored retrieval of categories and improved runtime search of files in category

Fixed issue with editing/saving categories

Database queries can now handle nested object paths

Code cleanup

backend/app.js

@@ -933,20 +933,13 @@ app.post('/api/getAllFiles', optionalJwt, async function (req, res) {
     else if (file_type_filter === 'video_only') filter_obj['isAudio'] = false;
     
     files = await db_api.getRecords('files', filter_obj, false, sort, range, text_search);
-    let file_count = await db_api.getRecords('files', filter_obj, true);
-    playlists = await db_api.getRecords('playlists', {user_uid: uuid});
-
-    const categories = await categories_api.getCategoriesAsPlaylists(files);
-    if (categories) {
-        playlists = playlists.concat(categories);
-    }
+    const file_count = await db_api.getRecords('files', filter_obj, true);
 
     files = JSON.parse(JSON.stringify(files));
 
     res.send({
         files: files,
         file_count: file_count,
-        playlists: playlists
     });
 });
 
@@ -1383,7 +1376,7 @@ app.post('/api/getPlaylists', optionalJwt, async (req, res) => {
 
     let playlists = await db_api.getRecords('playlists', {user_uid: uuid});
     if (include_categories) {
-        const categories = await categories_api.getCategoriesAsPlaylists(files);
+        const categories = await categories_api.getCategoriesAsPlaylists();
         if (categories) {
             playlists = playlists.concat(categories);
         }

backend/categories.js

@@ -55,12 +55,12 @@ async function getCategories() {
     return categories ? categories : null;
 }
 
-async function getCategoriesAsPlaylists(files = null) {
+async function getCategoriesAsPlaylists() {
     const categories_as_playlists = [];
     const available_categories = await getCategories();
-    if (available_categories && files) {
+    if (available_categories) {
         for (let category of available_categories) {
-            const files_that_match = utils.addUIDsToCategory(category, files);
+            const files_that_match = await db_api.getRecords('files', {'category.uid': category['uid']});
             if (files_that_match && files_that_match.length > 0) {
                 category['thumbnailURL'] = files_that_match[0].thumbnailURL;
                 category['thumbnailPath'] = files_that_match[0].thumbnailPath;

backend/config.js

@@ -127,7 +127,7 @@ function setConfigItem(key, value) {
     success = setConfigFile(config_json);
 
     return success;
-};
+}
 
 function setConfigItems(items) {
     let success = false;

backend/db.js

@@ -387,9 +387,9 @@ exports.getPlaylist = async (playlist_id, user_uid = null, require_sharing = fal
     if (!playlist) {
         playlist = await exports.getRecord('categories', {uid: playlist_id});
         if (playlist) {
-            // category found
-            const files = await exports.getFiles(user_uid);
-            utils.addUIDsToCategory(playlist, files);
+            const uids = (await exports.getRecords('files', {'category.uid': playlist_id})).map(file => file.uid);
+            playlist['uids'] = uids;
+            playlist['auto'] = true;
         }
     }
 
@@ -1090,7 +1090,7 @@ exports.applyFilterLocalDB = (db_path, filter_obj, operation) => {
             const filter_prop = filter_props[i];
             const filter_prop_value = filter_obj[filter_prop];
             if (filter_prop_value === undefined || filter_prop_value === null) {
-                filtered &= record[filter_prop] === undefined || record[filter_prop] === null
+                filtered &= record[filter_prop] === undefined || record[filter_prop] === null;
             } else {
                 if (typeof filter_prop_value === 'object') {
                     if ('$regex' in filter_prop_value) {
@@ -1099,7 +1099,11 @@ exports.applyFilterLocalDB = (db_path, filter_obj, operation) => {
                         filtered &= filter_prop in record && record[filter_prop] !== filter_prop_value['$ne'];
                     }
                 } else {
-                    filtered &= record[filter_prop] === filter_prop_value;
+                    // handle case of nested property check
+                    if (filter_prop.includes('.'))
+                        filtered &= utils.searchObjectByString(record, filter_prop) === filter_prop_value;
+                    else
+                        filtered &= record[filter_prop] === filter_prop_value;
                 }
             }
         }

backend/test/tests.js

@@ -272,6 +272,11 @@ describe('Database', async function() {
             const result = db_api.applyFilterLocalDB([{test: 'test'}, {test: 'test1'}], {test: filter}, 'find');
             assert(result && result['test'] === 'test1');
         });
+
+        it('Nested', async function() {
+            const result = db_api.applyFilterLocalDB([{test1: {test2: 'test3'}}, {test4: 'test5'}], {'test1.test2': 'test3'}, 'find');
+            assert(result && result['test1']['test2'] === 'test3');
+        });
     })
 });
 

backend/utils.js

@@ -456,6 +456,21 @@ function injectArgs(original_args, new_args) {
     return updated_args;
 }
 
+const searchObjectByString = function(o, s) {
+    s = s.replace(/\[(\w+)\]/g, '.$1'); // convert indexes to properties
+    s = s.replace(/^\./, '');           // strip a leading dot
+    var a = s.split('.');
+    for (var i = 0, n = a.length; i < n; ++i) {
+        var k = a[i];
+        if (k in o) {
+            o = o[k];
+        } else {
+            return;
+        }
+    }
+    return o;
+}
+
 // objects
 
 function File(id, title, thumbnailURL, isAudio, duration, url, uploader, size, path, upload_date, description, view_count, height, abr) {
@@ -489,7 +504,6 @@ module.exports = {
     createContainerZipFile: createContainerZipFile,
     durationStringToNumber: durationStringToNumber,
     getMatchingCategoryFiles: getMatchingCategoryFiles,
-    addUIDsToCategory: addUIDsToCategory,
     getCurrentDownloader: getCurrentDownloader,
     recFindByExt: recFindByExt,
     removeFileExtension: removeFileExtension,
@@ -501,5 +515,6 @@ module.exports = {
     fetchFile: fetchFile,
     restartServer: restartServer,
     injectArgs: injectArgs,
+    searchObjectByString: searchObjectByString,
     File: File
 }